Most of the methods in the java.util.Date class have been deprecated so these methods should not be used in new code. The class to use is GregorianCalendar which has the advantage of coping with different time locales but is not the easiest class to get to grips with. If you look it up in the Java class libraries you should also look at its parent class Calendar.

The following code shows how to get the number of days between 2 dates.

1. GregorianCalendar c1, c2;
2. Date date1, date2;
3. int daysBetween;
4. final long millisInDay = 24 * 60 * 60 * 1000;
5. 
   
6. void setup(){
7.   //  parameters = year, month(0-11), day_of_month
8.   c1 = new GregorianCalendar(2010, 0, 30);
9.   date1 = c1.getTime();
10.   c2 = new GregorianCalendar(2011, 0, 31);
11.   date2 = c2.getTime();
12.   daysBetween = numberDaysBetween(date1, date2);
13.   println(daysBetween);
14. }
15. 
    
16. int numberDaysBetween(Date d1, Date d2){
17.   long dt1 = d1.getTime();
18.   long dt2 = d2.getTime();
19.   int days = (int)((dt2 - dt1)/millisInDay);
20.   return days;
21. }

PS the getTime() method in Date class has not been deprecated.

Thanks, i figured out the same but your code is a bit easier to read